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Preparation method of high-performance active coke for flue gas purification

A flue gas purification and activated coke technology, applied in chemical instruments and methods, separation methods, inorganic chemistry, etc., can solve the problems of excessive NOx emissions, denitrification performance of activated coke, poor adsorption performance, wear resistance and pressure resistance, and affect the operation of activated coke Cost and other issues, to achieve the effect of excellent wear resistance, strong adsorption capacity

Pending Publication Date: 2021-08-10
YULIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Activated coke flue gas desulfurization and denitrification technology is a flue gas purification technology with broad-spectrum purification function. As the core raw material in active coke desulfurization and denitrification, activated coke directly affects the performance of active coke desulfurization and denitrification, and affects the operation of active coke Cost; in the actual use of activated coke, many activated cokes have poor denitrification performance, adsorption performance, wear resistance and pressure resistance. On the one hand, it is easy to cause NOx emissions in flue gas emissions to exceed the standard; cost

Method used

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  • Preparation method of high-performance active coke for flue gas purification

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Experimental program
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Effect test

Embodiment 1

[0024] A method for preparing high-performance activated coke for flue gas purification, characterized in that it comprises the following steps:

[0025] S1. After mixing coking coal with a caking index greater than 60, activated semi-coke, and rare earth elements in a mass ratio of 20:5:0.02, grind them to a particle size of 200 mesh to obtain raw material powder for later use;

[0026] S2. Add raw material powder, nano-grade cornstarch, and water to a kneader in a mass ratio of 1:10%:5% to obtain a kneaded material;

[0027] S3. Send the kneaded material into a granulator for granulation, dry it until the water content is 5%, then send it into a carbonization activation device for carbonization activation, and cool to obtain primary activated coke;

[0028] S4. Mix and stir primary activated coke, graphene oxide solution (0.01mg / mL), polyacrylonitrile-based carbon fiber, and solid hydrogel particles in a mass ratio of 10:3:0.2:0.01, and place in In the mould, the tablet mac...

Embodiment 2

[0030] A method for preparing high-performance activated coke for flue gas purification, characterized in that it comprises the following steps:

[0031] S1. After mixing bituminous coal, activated semi-coke, and rare earth elements according to the ratio of 80: 40: 0.1 in mass ratio, grind to a particle size of 200 mesh to obtain raw material powder, and set aside;

[0032] S2. Add raw material powder, nano-grade cornstarch, and water to a kneader in a mass ratio of 1:40%:20% to obtain a kneaded material;

[0033] S3, sending the kneaded material into a granulator for granulation, drying until the water content is 10%, and then sending it into a carbonization activation device for carbonization activation, and cooling to obtain primary activated coke;

[0034] S4. Mix primary activated coke with graphene oxide solution (0.01mg / mL), polyacrylonitrile-based carbon fiber, and solid hydrogel particles in a mass ratio of 20: 5: 1: 0.1. In the mould, the tablet machine compresses ...

Embodiment 3

[0036] A method for preparing high-performance activated coke for flue gas purification, characterized in that it comprises the following steps:

[0037] S1. After mixing the 1:1 mixture of bituminous coal and anthracite, activated semi-coke, and rare earth elements according to the ratio of 60:22.5:0.06 in mass ratio, grind to a particle size of 200 mesh to obtain raw material powder, and set aside;

[0038] S2. Add raw material powder, nano-grade cornstarch, and water to a kneader in a mass ratio of 1:25%:12.5% ​​to obtain a kneaded material;

[0039] S3. Send the kneaded material into a granulator for granulation, dry it until the water content is 7.5%, then send it into a carbonization activation device for carbonization activation, and cool to obtain primary activated coke;

[0040] S4. Mix and stir primary active coke, graphene oxide solution (0.01mg / mL), polyacrylonitrile-based carbon fiber, and solid hydrogel particles in a mass ratio of 15:4:0.6:0.055, and place In t...

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Abstract

The invention relates to the field of waste gas purification, in particular to a preparation method of high-performance active coke for flue gas purification, which comprises the following steps: mixing raw coal, activated semi-coke and rare earth elements according to the mass ratio of (20-80):(5-40):(0.02-0.1), and grinding until the particle size is 200 meshes to obtain raw material powder for later use; adding the raw material powder, nanoscale corn starch and water into a kneading machine for kneading to obtain a kneaded material; feeding the kneaded material into a granulator for granulation, drying until the moisture is 5-10%, then feeding the kneaded material into a carbonization and activation device for carbonization and activation, and cooling to obtain primary active coke; d anuniformly mixing and stirring the primary active coke, the graphene oxide solution, the polyacrylonitrile-based carbon fiber and the solid hydrogel particles, putting the mixture into a mold, tabletting by a tabletting machine, and drying, so as to obtain the composite material. The active coke obtained by the invention has relatively strong adsorption capacity, and has excellent wear resistance, pressure resistance and desulfurization and denitrification performance.

Description

technical field [0001] The invention relates to the field of exhaust gas purification, in particular to a preparation method of high-performance active coke for flue gas purification. Background technique [0002] Activated coke is a carbon material product with adsorption and catalytic properties. It has the characteristics of activated carbon, such as large specific surface area, stable chemical properties, renewable, and reusable. At the same time, it overcomes the high price of activated carbon, low mechanical strength, and intolerance. Grinding, easy to generate dust, has been widely used in the field of air pollution control and environmental water treatment. [0003] Activated coke flue gas desulfurization and denitrification technology is a flue gas purification technology with broad-spectrum purification function. As the core raw material in active coke desulfurization and denitrification, activated coke directly affects the performance of active coke desulfurizatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/342C01B32/354B01D53/02B01J20/20
CPCC01B32/342C01B32/354C01B32/382B01J20/20B01D53/02B01D2258/0283B01D2253/102
Inventor 高平强张岩魏建雄王蕊
Owner YULIN UNIV
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